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WAEC Mathematics 1994 Question 14

Question 14

Graphs of Functions

Which of the following is a point on the curve y = x2 − 4x + 7?

  1. A.(0,6)
  2. B.(1,4)
  3. C.(2,0)
  4. D.(7,0)
  5. E.(3,2)
Show the answer and explanation

Answer: B ((1,4))

Explanation

At x = 1, y = 1 − 4 + 7 = 4, so (1, 4) is on the curve. The other points do not satisfy the equation.